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The best method for the separation of naphthalene and benzoic acid from their mixture is

1. (a) distillation
2. (b) sublimation
3. (c) chromatography
4. (d) crystallisation

Correct answer: (b) sublimation

Solution

Naphthalene sublimes upon heating, while benzoic acid does not. Sublimation is the most effective method to separate these two compounds based on their physical properties.

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